:root {
    --primary-blue: #0077be;
    --accent-orange: #ff8c00;
    --sand-color: #f4e4bc;
    --palm-green: #3a5f0b;
    --white: #ffffff;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    color: #333;
    min-height: 100vh;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    color: var(--primary-blue);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 10px;
}

header p {
    font-size: 1.2rem;
    color: var(--palm-green);
    margin-bottom: 30px;
}

.booth-container {
    background: rgba(255, 255, 255, 0.7);
    padding: 20px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    margin-bottom: 40px;
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 640px;
    aspect-ratio: 4 / 3;
    margin: 0 auto 20px;
    background: #000;
    border-radius: 10px;
    overflow: hidden;
    border: 5px solid var(--white);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

#webcam {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1); /* Mirror effect */
}

#countdown {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8rem;
    font-weight: bold;
    color: var(--white);
    text-shadow: 0 0 20px rgba(0,0,0,0.5);
    z-index: 10;
}

#flash {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    z-index: 20;
    opacity: 0;
}

.flash-animation {
    animation: flash-effect 0.3s ease-out;
}

@keyframes flash-effect {
    0% { opacity: 0.8; }
    100% { opacity: 0; }
}

.controls {
    display: flex;
    gap: 15px;
    justify-content: center;
}

button {
    padding: 12px 25px;
    font-size: 1.1rem;
    font-weight: bold;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#start-btn {
    background-color: var(--primary-blue);
    color: var(--white);
}

#capture-btn {
    background-color: var(--accent-orange);
    color: var(--white);
}

#capture-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

#download-btn {
    background-color: var(--palm-green);
    color: var(--white);
}

button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

#result-container {
    margin-top: 40px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.photo-strip-wrapper {
    display: inline-block;
    padding: 15px;
    background: var(--white);
    border-radius: 5px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    margin-top: 20px;
}

#result-canvas {
    max-width: 300px;
    height: auto;
    border: 1px solid #ddd;
}

.hidden {
    display: none !important;
}

footer {
    margin-top: 50px;
    padding-bottom: 30px;
    color: #666;
}